Biogenically induced bedded chert formation in the alkaline palaeo-lake of the Green River Formation
Abstract
Rhythmically bedded cherts are observed in both pelagic marine and lacustrine deposits, but the formation mechanism in the latter remains highly uncertain. Our study of alternating chert–dolomite beds in the Eocene Green River Formation, Utah, USA reveals dense accumulations of organic-matter spheres (30–50 μm diameter) of probable algal cyst origin in the chert layers, and centennial- to millennial-scale periodicities in chert layer deposition....
Paper Details
Title
Biogenically induced bedded chert formation in the alkaline palaeo-lake of the Green River Formation
Published Date
Nov 11, 2019
Journal
Volume
9
Issue
1
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